Handle instance fields in compile_from_dill_test

tests/compiler/dart2js/mirror_private_name_inheritance_test.dart

Index: tests/compiler/dart2js/mirror_private_name_inheritance_test.dart
diff --git a/tests/compiler/dart2js/mirror_private_name_inheritance_test.dart b/tests/compiler/dart2js/mirror_private_name_inheritance_test.dart
index cf3784b4fb2f8a5f5c0a400f1cc38aa4c3e1f71e..0c4193fec31c135f09fa89b58cba64a52cced214 100644
--- a/tests/compiler/dart2js/mirror_private_name_inheritance_test.dart
+++ b/tests/compiler/dart2js/mirror_private_name_inheritance_test.dart
@@ -43,7 +43,7 @@ void main() {
     var superclass =
         findElement(compiler, 'Super', Uri.parse('memory:lib.dart'));
     var subclass = findElement(compiler, 'Subclass');
-    var oracle = compiler.backend.mirrorsData.isAccessibleByReflection;
+    var oracle = compiler.backend.mirrorsData.isMemberAccessibleByReflection;
     print(superclass.lookupMember('_private'));
     Expect.isTrue(oracle(superclass.lookupMember('_private')));
     Expect.isFalse(oracle(subclass.lookupMember('_private')));